Healthcare provider profile · identity verified

David C Weisman, M.D.

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Behavioral Neurology & Neuropsychiatry · ABINGTON, PA · NPI 1295832723

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show David C Weisman, M.D. received $92,162.55 in general payments during 2025 across 134 reported records.

Eisai Inc. accounted for 56.1% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 26 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Rexulti.

Lundbeck LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported REXULTI as an associated drug or biological on 71829 records involving 25812 distinct recipient NPIs. Public Medicare Part D data also shows 89 claims for Rexulti by this doctor in 2024.

Otsuka America Pharmaceutical, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported REXULTI as an associated drug or biological on 160756 records involving 46288 distinct recipient NPIs. Public Medicare Part D data also shows 89 claims for Rexulti by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$92,162.55

134 reported records · 26 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Eisai Inc. Unresolved — no canonical attribution shown $51,747.1556.1%462025
Lilly USA, LLC Unresolved — no canonical attribution shown $36,438.9439.5%342025
Biogen, Inc. Unresolved — no canonical attribution shown $2,734.623.0%22025
ARGENX US, INC. Unresolved — no canonical attribution shown $265.110.3%92025
Lundbeck LLC Unresolved — no canonical attribution shown $143.450.2%82025
Aucta Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $96.560.1%42025
GENZYME CORPORATION Unresolved — no canonical attribution shown $75.000.1%12025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $74.870.1%22025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $70.950.1%32025
ABBVIE INC. Unresolved — no canonical attribution shown $64.690.1%32025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $57.340.1%32025
Neurelis, Inc. Neurelis, Inc.
exact · evidence 2025-02-20
$51.960.1%32025
Genentech, Inc. Unresolved — no canonical attribution shown $39.750.0%12025
Impel Pharmaceuticals LLC Unresolved — no canonical attribution shown $33.700.0%22025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $32.270.0%22025
Roche Diagnostics Corporation Unresolved — no canonical attribution shown $26.780.0%12025
JAZZ PHARMACEUTICALS INC. Unresolved — no canonical attribution shown $26.700.0%12025
Genentech USA, Inc. Unresolved — no canonical attribution shown $24.510.0%12025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $24.510.0%12025
Merz Pharmaceuticals, LLC Unresolved — no canonical attribution shown $22.950.0%12025
CSL Behring Unresolved — no canonical attribution shown $22.330.0%12025
Grifols USA, LLC Unresolved — no canonical attribution shown $20.080.0%12025
EMD Serono, Inc. Unresolved — no canonical attribution shown $20.000.0%12025
Inspire Medical Systems, Inc. Unresolved — no canonical attribution shown $18.890.0%12025
Alnylam Pharmaceuticals Inc. Unresolved — no canonical attribution shown $14.740.0%12025
Tanabe Pharma America, Inc. Unresolved — no canonical attribution shown $14.700.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$33,975.0019
Compensation for serving as faculty or as a speaker for a medical education program$25,577.5015
Consulting Fee$18,177.505
Travel and Lodging$11,279.6223
Food and Beverage$3,152.9372

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
Leqembi
Normalized: leqembi
Drug Eisai Inc. $51,633.47 44 2025
Source payment records
KISUNLA
Normalized: kisunla
Drug Lilly USA, LLC $36,431.09 33 2025
Source payment records
VYVGART
Normalized: vyvgart
Drug ARGENX US, INC. $265.11 9 2025
Source payment records
VYVGART HYTRULO
Normalized: vyvgart hytrulo
Drug ARGENX US, INC. $265.11 9 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC, Otsuka America Pharmaceutical, Inc. $109.82 6 2025
Source payment records
Motpoly XR
Normalized: motpoly xr
Drug Aucta Pharmaceuticals, Inc. $96.56 4 2025
Source payment records
VYEPTI
Normalized: vyepti
Biological Lundbeck LLC $90.97 5 2025
Source payment records
HYQVIA
Normalized: hyqvia
Biological Takeda Pharmaceuticals U.S.A., Inc. $74.87 2 2025
Source payment records
WAINUA
Normalized: wainua
Drug AstraZeneca Pharmaceuticals LP $70.95 3 2025
Source payment records
VALTOCO
Normalized: valtoco
Drug Neurelis, Inc. $51.96 3 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $46.85 2 2025
Source payment records
BOTOX
Normalized: botox
Biological ABBVIE INC. $45.94 2 2025
Source payment records
Ocrevus
Normalized: ocrevus
Biological Genentech, Inc. $39.75 1 2025
Source payment records
TRUDHESA
Normalized: trudhesa
Drug Impel Pharmaceuticals LLC $33.70 2 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $32.27 2 2025
Source payment records
Elecsys Troponin T Gen 5 STAT
Normalized: elecsys troponin t gen 5 stat
Device Roche Diagnostics Corporation $26.78 1 2025
Source payment records
EPIDIOLEX
Normalized: epidiolex
Drug JAZZ PHARMACEUTICALS INC. $26.70 1 2025
Source payment records
Ocrevus Zunovo
Normalized: ocrevus zunovo
Biological Genentech USA, Inc. $24.51 1 2025
Source payment records
INBRIJA
Normalized: inbrija
Drug Merz Pharmaceuticals, LLC $22.95 1 2025
Source payment records
Hizentra
Normalized: hizentra
Biological CSL Behring $22.33 1 2025
Source payment records
Gamunex-C
Normalized: gamunex c
Biological Grifols USA, LLC $20.08 1 2025
Source payment records
INSPIRE
Normalized: inspire
Device Inspire Medical Systems, Inc. $18.89 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $18.75 1 2025
Source payment records
ONPATTRO
Normalized: onpattro
Drug Alnylam Pharmaceuticals Inc. $14.74 1 2025
Source payment records
Radicava
Normalized: radicava
Drug Tanabe Pharma America, Inc. $14.70 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $7.85 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
REXULTI
rexulti
2025 Rexulti 2024 89 exact normalized Medicare Part D

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
Lundbeck LLC
Exact reporting entity; no affiliate inference
2025 REXULTI
open payments reported associated product
CMS Open Payments — General Payments
71829 supporting records · 25812 recipient NPIs · example record 1251759986
Rexulti · 2024
Exact normalized brand match · 1 Part D row
89 24
Otsuka America Pharmaceutical, Inc.
Exact reporting entity; no affiliate inference
2025 REXULTI
open payments reported associated product
CMS Open Payments — General Payments
160756 supporting records · 46288 recipient NPIs · example record 1227267708
Rexulti · 2024
Exact normalized brand match · 1 Part D row
89 24

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
Donepezil HclDonepezil Hcl1018260
Sertraline HclSertraline Hcl767207
Memantine HclMemantine Hcl381103
AripiprazoleAripiprazole12633
Escitalopram OxalateEscitalopram Oxalate9331
RexultiBrexpiprazole8924
Buspirone HclBuspirone Hcl7323
Trazodone HclTrazodone Hcl7228
Quetiapine FumarateQuetiapine Fumarate6918
MirtazapineMirtazapine6418
RivastigmineRivastigmine6021
Duloxetine HclDuloxetine Hcl5415
Bupropion HclBupropion Hcl4714
Carbidopa-LevodopaCarbidopa/Levodopa47suppressed
LorazepamLorazepam4328
ClonazepamClonazepam4120
NuplazidPimavanserin Tartrate41suppressed
GabapentinGabapentin4013
RisperidoneRisperidone3312
Methylphenidate HclMethylphenidate Hcl2519
RivastigmineRivastigmine Tartrate21suppressed
Venlafaxine Hcl ErVenlafaxine Hcl19suppressed
OlanzapineOlanzapine18suppressed
AlprazolamAlprazolam17suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate17suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa15suppressed
Venlafaxine HclVenlafaxine Hcl15suppressed
IbuprofenIbuprofen13suppressed
Fluoxetine HclFluoxetine Hcl11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $92,162.55 · 134 records Eisai Inc. AUSTEDO XR, BOTOX, EPIDIOLEX, Elecsys Troponin T Gen 5 STAT, Gamunex-C, HYQVIA, Hizentra, INBRIJA, INSPIRE, KISUNLA, Leqembi, MOUNJARO, Motpoly XR, ONPATTRO, Ocrevus, Ocrevus Zunovo, QULIPTA, REXULTI, Radicava, TRUDHESA, UBRELVY, VALTOCO, VYEPTI, VYVGART, VYVGART HYTRULO, WAINUA 2
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error